electromagnetism
🇺🇸
/ɪˌlektrəʊˈmæɡnətɪzəm/
🇬🇧
/ɪˌlektrəʊˈmæɡnətɪzəm/
The force that causes certain materials to be attracted to each other when electricity is flowing through them.
The principles of electromagnetism are used to create powerful magnets that can lift heavy objects.
电磁学的原理被用来创建能够举起重物的强大磁铁。